US5287402A
Expired / Lapsed
US
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Data communication apparatus
Assignee: Canon Inc
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Filing: 1991-08-09
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Granted: 1994-02-15
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Expires: 2011-08-09
Abstract
Abstract There is disclosed a facsimile apparatus which transmits a predetermined signal, such as CNG signal, during pause periods succeeding the transmission of telephone number signals. This operation prevents the delay of CNG signal detection in case the receiving side has an automatic telephone/facsimile switching function, and also prevents the facsimile communication being erroneously cut off in case the pause period of the calling side eventually overlaps with the CNG detection period of the receiving side.
Inventors
- 👤 Toshifumi Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:20
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/327; H04N1/32704; H04N1/32715; H04N1/32719; H04N1/32795
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
88 words
A data communication apparatus comprising: generator means for generating numerical data and pause data; and transmission means for transmitting a dial signal corresponding to the numerical data generated by said generator means and transmitting a predetermined signal after a transmission of the dial signal is terminated, wherein said transmission means is adapted to transmit the predetermined signal by a number of times corresponding to the pause data generated by said generator means between the transmission of the dial signal and a transmission of one additional said predetermined signal.
Claim 2
Dependent Claim
88 words
A data communication apparatus comprising: generator means for generating numerical data and pause data; and transmission means for transmitting a dial signal corresponding to the numerical data generated by said generator means and transmitting a predetermined signal after a transmission of the dial signal is terminated, wherein said transmission means is adapted to transmit the predetermined signal by a number of times corresponding to the pause data generated by said generator means between the transmission of the dial signal and a transmission of one additional said predetermined signal.
Claim 3
Dependent Claim
35 words
An apparatus according to claim 1, wherein said transmission means is adapted to transmit the predetermined signal in a part of a predetermined pause period, when the pause data are generated by said generator means.
Claim 4
Dependent Claim
51 words
An apparatus according to claim 1, wherein said transmission means is adapted to repeatedly transmit the predetermined signal by a number of times corresponding to the number of pause data generated by said generator means, with a predetermined interval, when plural pause data are generated in succession by said generator means.
Claim 5
Dependent Claim
92 words
An apparatus according to claim 1, wherein said transmission means is adapted when the pause data generated by said generating means are generated in the middle of a train of numerical data, to form a predetermined pause period between the transmission of the dial signal based on the numerical data preceding the pause data and the transmission of the dial signal based on the numerical data succeeding the pause data, and, when the pause data are generated by said generating means after the train of numerical data, to transmit the predetermined signal.
Claim 6
Dependent Claim
22 words
An apparatus according to claim 1, wherein the predetermined signal transmitted by said transmission means is a tone signal of 1100 Hz.
Claim 7
Dependent Claim
26 words
An apparatus according to claim 1, further comprising discrimination means for discriminating the response from the called side, in a period determined by the pause data.
Claim 8
Dependent Claim
99 words
A data communication apparatus comprising: setting means for setting dial data including numerical data and control data; and transmission means for transmitting dial signals based on the numerical data set by said setting means and transmitting predetermined protocol signal after a transmission of the dial signals is terminated, wherein said transmission means is adapted to transmit the predetermined protocol signal by a number of times corresponding to the control data set by said setting means between the transmission of the dial signals and a transmission of one additional said predetermined protocol signal, wherein said control data includes pause data.
Claim 9
Dependent Claim
99 words
A data communication apparatus comprising: setting means for setting dial data including numerical data and control data; and transmission means for transmitting dial signals based on the numerical data set by said setting means and transmitting predetermined protocol signal after a transmission of the dial signals is terminated, wherein said transmission means is adapted to transmit the predetermined protocol signal by a number of times corresponding to the control data set by said setting means between the transmission of the dial signals and a transmission of one additional said predetermined protocol signal, wherein said control data includes pause data.
Claim 10
Dependent Claim
84 words
An apparatus according to claim 7, wherein said transmission means is adapted, when the control data are set in the middle of a train of numerical data, to set a predetermined pause period between the transmission of the dial signals based on the numerical data preceding the control data and the transmission of the dial signals based on the numerical data succeeding the control data, and, when the control data are set after the train of numerical data, to transmit the predetermined protocol signal.
Claim 11
Dependent Claim
23 words
An apparatus according to claim 7, wherein the predetermined protocol signal transmitted by said transmission means is a tone signal of 1100 Hz.
Claim 12
Dependent Claim
37 words
An apparatus according to claim 7, wherein said transmission means is adapted to repeatedly transmit the predetermined protocol signal by a number of times corresponding to the number of the control data set by said setting means.
Claim 13
Dependent Claim
26 words
An apparatus according to claim 7, further comprising discrimination means for discriminating a response from a called side, in a period corresponding to the control data.
Claim 14
Dependent Claim
88 words
A data communication apparatus comprising: storing means for storing numerical data and control data; and transmission means for transmitting dial signals corresponding to the numerical data stored in said storing means, wherein said transmission means discriminates whether or not a transmission of the dial signals is terminated, and transmits a predetermined protocol signal by a number of times corresponding to a number of the control data stored in said storing means after a termination of the transmission of the dial signals, wherein the control data includes pause data.
Claim 15
Dependent Claim
88 words
A data communication apparatus comprising: storing means for storing numerical data and control data; and transmission means for transmitting dial signals corresponding to the numerical data stored in said storing means, wherein said transmission means discriminates whether or not a transmission of the dial signals is terminated, and transmits a predetermined protocol signal by a number of times corresponding to a number of the control data stored in said storing means after a termination of the transmission of the dial signals, wherein the control data includes pause data.
Claim 16
Dependent Claim
40 words
An apparatus according to claim 12, wherein said transmission means enters pauses by a number of times corresponding to the number of the control data stored in said storing means before the termination of the transmission of the dial signals.
Claim 17
Dependent Claim
18 words
An apparatus according to claim 12, wherein the predetermined protocol signal includes a tone signal of 1,100 Hz.
References Cited (Backward Citations)
JPS58200655A
Cited
US4773080A
Cited
US4571463A
Cited
US4772955A
Cited
US4800439A
Cited
US4956860A
Cited
US4910610A
Cited
US4908851A
Cited
US5127047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-14 | 1997-08-16 | 1998-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-14 | 2001-08-16 | 2002-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-14 | 2005-08-16 | 2006-02-15 | $7700.00 | Window Closed / Lapsed |